You can see from that illustration that there are essentially 6 compartments: 2 small ones at the top that are loaded from the top, 2 big compartments in the middle that are loaded from the front, and 2 small compartments on the bottom that are also loaded from the front. Everything can be opened or closed with snaps. It's lighter than a T-shirt, and when it's empty, it folds up to take up less space than a T-shirt.

You can pack it up with everything you need at home, and then secure all the buckles. When you get to where your staying, you can simply hang it up on a closet rod (or on a tree branch if you're camping). You don't need to unpack or repack anything; you just hang it up and open the compartments that you need.

When you're ready to head back home from your trip, just close all the compartments and throw it in your suitcase. It goes from being used on your trip/vacation to being packed in 2 seconds.

My Lightweight Travel Organizer has been laying around for a while (note opening sentence about not traveling much recently), so it's pretty wrinkled up. I hung it in my kitchen for a photo:

The Pack's Lightweight Travel Organizer.

Showing the bottom dual compartment of The Pack.

I didn't know how well items would stay inside, so I grabbed a big Stanley tape measure that I had sitting next to me. I figured it could fall out of the pack quite easily, but I set it in there and it stayed put. I'm super eager to try this out on an actual trip sometime.

Disclosure of Material Connection: I received Lightweight Travel Organizer for free from Pack Gear as coordinated by Outdoor PR in consideration for review publication.